Gender differences in exercise efficiency
The influence of adiposity during low-intensity cycling in healthy Lebanese university students
Bibliographic Data
| ID | 5219010 |
|---|---|
| Authors | Elie-Jacques Fares (0000-0001-6506-9867, Université de Sherbrooke, corresponding author), Rédina Berkachy (0000-0002-7491-0416, School of Engineering and Architecture of Fribourg), Sarah Zaki (American University of Beirut) |
| Year | 2025 |
| Volume | 44 |
| Issue | 1 |
| Pages | 9-9 |
| Publication date | 2025-03-12 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Journal of PHYSIOLOGICAL ANTHROPOLOGY (JOURNAL) |
| Journal identifiers | ISSN: 1880-6791 • E-ISSN: 1880-6805 |
| Publisher | Springer Science and Business Media LLC (PUBLISHER) |
| DOI | 10.1186/s40101-025-00389-4 |
| PMID | 40075531 |
| OpenAlex | W4408347399 |
| Language | EN |
| References cited | 23 |
Introduction Low-intensity physical activity plays a key role in weight regulation, and reduced engagement in such activities is associated with rising obesity rates. This study explored the relationship between body fat distribution and exercise efficiency during low-intensity cycling, comparable to everyday life, focusing on adiposity in men and women. Methods Thirty participants (50% women and 50% men) underwent basal metabolic rate (BMR) measurements after an overnight fast. Following 500 ml water intake, they cycled at 60 rpm for 5 min at four intensities (20 W, 40 W, 60 W, 80 W), with respiratory parameters (i.e., energy expenditure (EE)) recorded using an indirect calorimeter system. Spearman correlations were used to assess the relationships among BMI, total body and trunk fat percentages, and delta efficiency (DE), which quantifies the energy cost associated with incremental work output during exercise. Results A linear increase in EE with increasing power output was observed in both men and women, with men showing a slightly higher EE across all power levels. The linear regression equations for power between 20 and 80 W were highly predictive, with R 2 values of 0.999 for men and 0.995 for women. Additionally, significant positive correlations were observed between BMI, fat percentage, trunk and limb fat percentages, and delta efficiency (DE) in women, explaining 45.7%, 34.7%, 34.1%, and 29.7% of the variance in DE, respectively. No significant correlations were found between these variables in men. Conclusion This study demonstrated that body fat distribution, particularly in women, is significantly associated with exercise efficiency during low-intensity cycling. These findings highlight the need for larger studies that incorporate gender-specific considerations in exercise and targeted interventions
Animal science · Basal metabolic rate · Biology · Body fat distribution · Cycling · Energy expenditure · Exercise intensity · Heart rate · Linear regression · Obesity · Statistics · Trunk · Body Composition Measurement Techniques · Cardiovascular and exercise physiology · Demography · Mathematics · Medicine · Physical Activity and Health · Endocrinology
Sedentary time in adults and the association with diabetes, cardiovascular disease and death
Role of Low Energy Expenditure and Sitting in Obesity, Metabolic Syndrome, Type 2 Diabetes, and Cardiovascular Disease
Sex-Specific Differences in Lower Body Fat Distribution and Association with Physical Performance among Healthy Community-Dwelling Older Adults
Basal metabolic rate studies in humans
| Highly cited | No |
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